Technical Features
The OPERA 1.5 is a loudspeakers design from the outset to be n fine
example of the Opera philosophy. Musical accuracy combined with listening
pleasure has always been our key objective when designing loudspeakers.
But behind this apparently simple goal lies a vast amount of research,
great expertise in the science of acoustic and traditional skills in
the art of cabinet-making.
Much of the secret of the success of the Opera loudspeakers design is
due to our insistence on non-resonant cabinet .a properly constructed
cabinet enable to drive to give a clear, well focused and uncoloured
sound. Solid hardwood is the best material able to give the results
we require, as it combines the desirable properties of high mass and
great rigidity. The commonly-used alternative materials such as MDF
give acoustically inferior results by comparison.
The Opera 1.5 cabinet is made from staves of one-inch thick solid hardwood,
fully interlocked in the time-honoured tongue and groove method, then
hand-finished wit rounded edges and flared port.
As well as being acoustically inert, a solid hardwood loudspeakers is
an object of beauty, capable of giving pleasure to the eye as well as
to ear.
The OPERA 1.5 employs two drives units, both in excellent quality and
chosen for their precise acoustic characteristics. The treble frequencies
are handle by 27 mm, which has good dispersion, power handling and excellent
sweetness. Bass and mid-band are entrusted to a 130 mm, with double
magnet and robust chassis, which is capable of good deep bass performance
whilst maintaining clarity and precision right up to the crossover point
of 2.8 kHz. The crossover itself uses a few components as possible in
the signal path, but all are of the good quality and include air cored
indictors with self-cementing windings and close tolerance non-polarizing
capacitors. High quality internal cabling, hard wired throughout, and
Opera’s own solid brass connectors complete the hardware specification.
We recommend stand-mounting the OPERA 1.5, using a rigid stand of around
60 cm height, while placement at least 30 cm from the rear wall will
normally ensure best result. The Opera 1.5 is a fairly easy load for
the amplifier. With around 89 db sensitivity, therefore valve amplifier
of 12 watts and upwards, or good quality solid state amplifiers of between
20 and 80 watts will be most suitable. The sound obtain from the OPERA
1.5, when partnered by good ancillary equipment and correctly set up
in the listening room, in little short of a revelation.
Refinement, detail, a wide overall response and convincing natural balance
are all present in the portrayal of the music. Bass depth and weight
are available when called for, and the acoustic image on well-recoded
material is particularly realistic.
Type of loudspeakers bass reflex 2 way
Woofer 13 cm / 5.1“
Tweeter 27 mm /1.1“
Frequency response 50-20.000 Hz
Crossover frequency 2.8 Hz
Crossover type 4th order
Sensitivity 89 db
Nominal impedance 6 ohm
Max power handling 20-80 watts
Dimensions 34,5 x 18,5 x 30,5 cm (hxwxd)
13,6 x 7,3 x 12 inc.
Weight (unpacked) 7.5 kg. - 17 lbs each